Podcast
Questions and Answers
What is the main function of the phospholipid bilayer?
What is the main function of the phospholipid bilayer?
- Assisting in cellular tasks
- Controlling the entry and exit of the cell (correct)
- Stabilizing the cell membrane
- Facilitating intercellular fluid movement
What is the hydrophobic region within the phospholipid bilayer primarily composed of?
What is the hydrophobic region within the phospholipid bilayer primarily composed of?
- Sterols
- Proteins
- Fatty acids (correct)
- Carbohydrates
What role does diffusion play in the movement of molecules?
What role does diffusion play in the movement of molecules?
- It causes molecules to move from low concentration to high concentration areas
- It requires energy from the cell
- It results from intrinsic thermal energy in molecules (correct)
- It is not affected by temperature changes
What effect does the presence of sterols have on the cell membrane?
What effect does the presence of sterols have on the cell membrane?
How do cells use energy to move molecules within the intercellular fluid?
How do cells use energy to move molecules within the intercellular fluid?
Which process allows the movement of water through a semi-permeable membrane from areas of high concentration to areas of low concentration?
Which process allows the movement of water through a semi-permeable membrane from areas of high concentration to areas of low concentration?
In a hypotonic solution, what happens to the water in relation to the cell?
In a hypotonic solution, what happens to the water in relation to the cell?
What is the term for the increase in pressure inside plant cells due to the movement of water molecules into the cells?
What is the term for the increase in pressure inside plant cells due to the movement of water molecules into the cells?
What type of solutions have higher osmotic pressure in the fluid surrounding the cell, causing water to move out of the cell?
What type of solutions have higher osmotic pressure in the fluid surrounding the cell, causing water to move out of the cell?
Which type of proteins in the membrane help move molecules along the concentration gradient without additional energy input by the cell?
Which type of proteins in the membrane help move molecules along the concentration gradient without additional energy input by the cell?
Flashcards are hidden until you start studying
